Say goodbye to mucky fingers and mess… Our magic colouring-in pens have invisible ink which only appears on our super fun pages! Choose a colour and watch it magically emerge on the page. Each spiral bound pad contains 4 magic pens and 8 colouring pages, this Construction design has diggers, builders, cranes, cones and more. FEATURES: The magic pens only work on the paper - no mess! Contains 4 magic pens and 8 colouring pages Recommended age: 3+ ECO-FRIENDLY BENEFITS: Printed with vegetable inks All paper/card recyclable FSC Dimensions: 21 x 2.5 x 21cm / 8.2 x 0.9 x 8.2”